Emily Blunt and John Krasinski hadn’t worked together before that year. And at first, Emily was hesitant about being in the film. She didn’t want the movie’s main focus to be that they are actually married in real life, especially knowing that this project meant so much for John. But after reading the script, she changed her mind and thought that on the contrary, because they are married, they could portray the relationship and make it feel real to the people watching.